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Term

Definition

deadweight

total weight of cargo, stores, fuel and water needed to submerge a ship from her light draught to her maximum permitted draught; it is given by the difference between the load displacement and light displacement (also known as lightweight); DWT for short

a ship capable of transiting the St. Lawrence Seaway locks to trade in the Great Lakes between USA and Canada; the maximum beam and draught allowed in the lock is approximately 23.15 m and 26 feet fresh water respectively - this is equivalent to ship with a deadweight of about 20,000 tons

the weight of a ship complete with outfit and propulsion machinery, and ready for sea but without fuel, fresh water, stores, provisions, passengers or cargo on board; also known as Light Displacement Tonnage

describe a maximum hull form capable of transiting the Straits of Malacca fully loaded; the maximum draught and beam allowed in the strait is approximately 21 metres and 60 metres respectively with a deadweight of 280,000~300,000 tons or in terms of TEU, not exceeding 12,000

Formerly its size is only 185,000 deadweight; however this is superseded by Kooragang berths 2, 5, 8 and 9 which accept up to 210,000 deadweight vessels.

Panamax

describe a class of ship size with the maximum dimension capable of transiting the Panama Canal; the maximum beam and draught allowed in the canal is approximately 32.3 metres and 12 metres fresh water respectively.

In the 80s and 90s the deadweight is about 55,000 to 60,000. With the increase in width and length of Panama Locks, the Panamax is now re-defined as 80,000 deadweightbulker.